Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cho du snippets" » "hoc cao du snippets", "hoc pho du snippets", "hoc co du snippets", "hoc cho cu snippets", "hoc cho tu snippets", "hoc cho duoc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoc cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc cho du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cho du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.